Bending brake



Jail. 12 1926.

T. J. KELLEHER BENDING BRAKE Filed June 9, 1924 Jnven/ or. 270mm! CTlfeZZeZer Patented Jan. 12, 1926.

UNITED STATES PATENT OFFICE;

THOMAS J. KELLEHER, OF CHICAGO, ILLINOIS.

BENDING BRAKE.

Application filed June 9, 1924. Serial No. 718,782.

new and useful Improvements in Bending Brakes, of which the following,when taken in connection with the drawing accompanying and forming parthereof, is a full and complete specification.

This invention relates to bending brakes by means of which sheet metalof varying sizes and varying thicknesses may be bent or folded; andparticularly to the construction of the bed and of the bending leaf ofsaid brakes.

Among the objects of the invention are to lessen the cost of theconstruction of the bed of the brake, and of the folding leaf thereof,while, at the same time to retain the rigidity of said bed and foldingleaf. A. further object is to lessen the number of parts entering intothe construction of the bed, including the lower member of the jaw ofthe brake; and to lessen the number of the parts entering into theconstruction of the folding or bending leaf of the brake.

In the drawing referred to Fig. 1, is an elevation of one end of thebending brake embodying the invention.

And Fig. 2 is a vertical section of the bending brake illustrated inFig. 1.

Fig. 3 is an enlarged detail view of the parts around the pintle 36, theapron of the brake, taken on line 3-3 of Fig. 1, viewed in the directionindicated by arrows; and

Fig. 4 is an enlarged detail view showing the pintle at one end of thebrake, and adjacent parts in section, taken on line l4 of Fig. 1, viewedas indicated by arrows.

A reference character applied to designate a given part indicates saidpart throughout the several figures of the drawing wherever the sameappears.

1 represents a base member of the frame of the brake. 2 and 3respectively repre sent leg members of said frame; and 4 a diagonallyextending brace. The several members 1, 2, 3 and 4, are rigidly joinedtogether by rivets 5, 5. 6, 6, respectively represent end members of thebed of the brake, which are, respectively, secured on the upper ends oflegs 2 and 3, as by rivets 7, 7. 8 represents a horizontal member of thebed of the brake and consists of a metal plate. End members 6, 6, are,respectively,

provided with a flange 10, on which the horizontal member 8 rests, andto which it is firmly secured, as by rivets 11, 11. 13 represents avertically extending metal plate which is provided with the curved upperside 15. Plate 13 is rigidly secured to the upper end of leg 2, as byrivets 16, 16. 17 18 respectively represent metal rodswhich are,respectively, welded to the upper end 15 of vertical plate 13, and tothe under side of horizontal member 8 of the bed, near the forward sideof said member. The curved upper side 15 is for the purpose of bringingthe upper edge of said plate 13 as near as possible to the forward sideor edge ofsaid plate .8, to increase the rigidity of said side or edge.19 represents a bar whicliforms the lower member of the jaw of thebrake. 20, 20, respectively, represent metal rods which are welded tohorizontal member 8 of the bed, and to bar 19, to rigidly join saidmember and bar.

The upper j aw member of the brake comprises the inclined plate 21, thehorizontal plate 22, the end members 23, 23, and the thrust receivingbar 24:. The forward edges of the plates 21 and 22 are rigidly joined byrods 25, 26, which are welded to said plates. The rod 25 is also weldedto bar 24:. 27 represents a rod which is welded to the under side ofplate 22, and to the rear edge of bar 2 1, rigidly securing saidinclined plate 21, plate 22, and bar 24, together. 28 represents a rodwhich is welded to the under side of inclined plate 21 and to the innerside of end member 23, rigidly securing said plate and end memberstogether. 29 represents a metal rod which is welded to the upper side ofplate 22 and the inner side of end member 23, securing said plate 22 tothe respective end members. The position of the upper jaw member of thebrake is controlled by pin or bolt 30 in slot 31 of adjustable member 32and the handle 33 and link 34, in the ordinary way in bending brakes ofthis character, and forms no part of this invention.

The bending leaf or apron embodying this invention comprises a pluralityof ends 35, which are, respectively, pivotally mounted on a pintle 36,the vertically extending member 37 which is joined at its ends to an end35, by a rod 38, which iswelded to said member and to said end,vertically extending plate 39, which is curved at its upper side oredge, as at 40; and said upper edge is:-rigidly joined to verticallyextende ing member 37;. adjacent to thenupper side of said member 37, bya rod 41, whichis welded to said upper .edgeof. plate 39. and to saidmember 37. 42','represents a socket which is secured to end 35, in theordinary way. 43 represents a rod in said socket, and

44 a weight on said rodhcRod ldand Weight 44, form the ordinarycounterbalance of the pivotal lji m'iount'edsbending leaf of the brake.

I claimw 1. In: a bending-brake; standards; heads bedcomprising ahorizonta'l member anda vertical pl'ate5 the upper side of: said platecurvedy and the edg e 'of-said curved side ]Q'1-IXB(l to said 1'lIOIIZODtELl member ad acent to the 'forward edge- 1 thereof by 1 metalrods:

which are welded to said horizontal member tosald eclgeof thecurvedSIClB 'Of SiLlCl vertical member; 111' COlnbHIfllHOn WltlY a bar formingthe lower member of the of the bralreeand metalrods welded 'to said barand to said horizontal member," to rig-idly jOl-Il the same;

and a bed; all "rigidlysecured togetherysaid bed" comprising-- ahorizontal member, a -ver-- ti'c'al plate,--with the upper side of saidplate 80 curvedg an-d- -the edge of said curved side joined tosaidhorizontal member adjacent to the forward edge thereof by metal rodswhich are Welded to said horizontal member and .to the said edge of thecurved upper side of "said vertical" member, a bar forming thelowermember of the jaw of the brake,

and metal rods Welded to said bar and to said horizon-tall member torigidly join the same, in combination with a bending leaf pivotallymountedaomsaid-heads said bendingJleaf comprising heads;. a .vert-icalplate,

metalirodslweldedto'saidiheads and to saidplate to rigidly oin the same,'an additional vertical plate curved on the upper sidethereof, andadditional metal rodswelded to therupper.edge'pf said curved side ofsaid vertical: plate and to 'saidifirst named vertical plate,xto rigidlyjoin the'same;

3. In a bending brakeya pivotally mountedbendingrleaf comp-rising heads,a vertical plate. metal rodsiwelded to said lieads and THOMAS J.KELLEHER:

